Why it works: Butter and milk are a kitchen classic. They rank in the top 7% of all ingredient pairs, and cooks put them together in 81,283 recipes. Both carry (z)-4-heptenal, which smells biscuit, cream. The science ↓
Caramel Layer Cake
Ingredients
Directions
The book gives no oven temperature. The 300°F in the steps was added when the recipe was transcribed, as a starting point.
Prepare the flour
Sift flour once.
Add baking soda and flavoring powder to the sifted flour. Sift the mixture three times.
Make the batter
Cream the butter and sugar thoroughly.
Separate the eggs.
Beat the yolks until light. Add half the cream of tartar to the yolks and mix well.
Whip the egg whites to a light froth. Add the remaining cream of tartar to the egg whites. Whip the egg whites until stiff.
Combine the milk, egg whites, and flour mixture. Stir until smooth.
Bake and finish
Bake in two or three layers in a slow oven (300°F / 150°C) for 20 to 30 minutes. Increase heat slightly to finish baking for 10 to 20 minutes.
Once cooled, use the cakes for filling and icing with cold caramel.
Transcribed from a scanned cookbook and modernised for today's kitchens. Where the book gave no heat or time, or said "a moderate oven", the temperatures and times here may be modern equivalents rather than the book's own figures.
Explore the science
The flavor team
The pairs that carry this dish. Each one is judged two ways: how much their aromas overlap, and how often cooks already put them together.
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Butter + milktop 7% of all pairsSmell alikemoderateCooked together81,283 recipes
Shared aroma: (z)-4-heptenal (biscuit, cream).
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Butter + creamtop 8% of all pairsSmell alikemoderateCooked together41,516 recipes
Shared aroma: delta-dodecalactone (sweet, creamy).
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Cream + sugartop 9% of all pairsSmell alikemoderateCooked together43,450 recipes
Shared aroma: 2,3-butanedione (butter, sweet).
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Butter + flourtop 12% of all pairsSmell alikelowCooked together124,287 recipes
Shared aroma: isobutyraldehyde (malty, green).
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Flour + milktop 14% of all pairsSmell alikelowCooked together78,219 recipes
Shared aroma: isobutyraldehyde (malty, green).
Butter and flour barely smell alike, yet cooks put them together in 124,287 recipes: they work on texture and structure more than aroma.
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
What each ingredient does
- Eggs
- Whipped whites and yolks give the cake its light, airy structure.
- Butter
- Creamed with sugar, it adds fat that gives tenderness and richness.
- Flour
- Provides the main structure that holds the cake together as it bakes.
- Baking soda
- Reacts with the acid in the batter to produce gas that helps the cake rise.
- Cream of tartar
- Acidifies the egg whites, stabilizing them so they whip to a firmer foam.
- Granulated sugar
- Adds sweetness and, creamed with butter, helps trap air for a lighter crumb.
The step that matters
Whip the egg whites until stiff. Under-whipped whites collapse and deflate the batter, while over-whipped whites turn dry and grainy. Stiff, glossy peaks give the cake its lift when folded in.
“What each ingredient does” and “The step that matters” were written by Claude from this recipe’s own method and reviewed in samples by CompKitchen.
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